Improvement in books of carbon-paper



J. S. MGDONALD.l Book of Carbon Pper.`

No. 200,145. Patentednel.12,1878.`

INVNTOB:

N.PEI'ERS, PHUTD-LITHOGRAPHER, WASHINGTON. D (24 UNITED STATES 'PIITEIvIIl OEEICE.

JAMEs s. MGDCNALD, or CHICAGO, 'ILLINoIsv IMPROVEMENT IN BOOKS OF CARBON-PAPER.

Specification forming part of `Letters Patent No, 200,145, dated February 12, 1878; application filed September 14, 1877.

.To all whom 'it may conce/rn 1 Be ,it knownA that I, J AMEs S. MCDCNALD, of Chicago, in the county of Cook and State of Illinois, have-invented Certain new and useful Improvements relating to Books of Oarbon-Paper, of which the following is a specii- Y cation, reference being had to the 'accompanying drawing, in which- Figure l is a perspective view of a closed boimdvolume or book of impression-.sheets for stylus, and to receive an impression from the upper side of the carbonpaper, and with a sheet to receive an impression from the under side of the carbon-paper. The number of impressions made simultaneously can be considerably increased by using a greater number of carbon-sheets and manifold-sheets arranged alternately. To facilitate the operation of copying by this process, and also to aid in the preservation of the retained copies in a neat and compact manner, bound books have been made containing stylus or manifold sheets, and sheets adapted merely to receive impressions from the under side of the carbon-sheets, the manifold-sheets bein g arranged alternately with the others.

An objection to carbon and colored impression-sheets has been that the carbon or coloring matter is liable to soil the paper used for copies, and to be rubbed off upon the hands of the user. Other objections are, that the carbon or colored sheets are too limsy to be handled with facility, and, when detached or single, are liable to move or slide about between the other sheets or leaves. To obviate the rst objection the margins of the carbonsheets have been rendered clean by chemical means, and to render the sheets stii enough to be handled with facility they have been bound with a clean marginal binding sufciently stiii for that purpose.

My object is to further improve the impression-sheets in these and in other respects, and to extend their usefulness in connection with bound .volumes of copy-sheets, and to that end my invention consists of the means, substantially as hereinafter -described and spe cically set forth, which `I purpose to employ for that purpose. n

In the drawing, A represents a sheet of pasteboard, cardboard, or other material suit.- able for forming a thin, light, smooth, and irm resting surface or tablet for the sheets to be arranged above it during the operation of copying, as will hereinafter more fully be explained.

B B is a sheet of thin flexible material, such as Manila paper. The sheet B B is about twice the size ofthe sheet A, as represented, and is bound or connected to the sheet A by means of the cambric strip C or other suitable flexible Connecting material. D D are sheets of carbon-paper, stitched or otherwise bound or fastened to the cover A B B G, the carbonsheets being thus fastened together along one set of longitudinal edges, and there attached either to the strip C, or to the edges connected by the strip C, or to either of the said edges,

as may be deemed most desirable.

The strip C is not absolutely essential, for the inner edges ofthe sheets A and B may be connected directly to each other, or may even consist of one continuous sheet of material, uniting in it the qualities of the sheets A and B B. I deem it preferable, however, for general use and for the sake of economy, to make the covering in three parts, substantially as shown and described.

I have shown a number of carbon-sheets in the accompanying drawing, in order to indition may also be applied to use in connection with only one sheet of carbon, covered as described, and connected to the cover in the manner shown, as will hereinafter more fully appear.

It will bev observed that the cover projects beyond the edges of the carbon-sheets, as the covers of books are usually made to do. It Will also be perceived, on reference to Fig. 1, that the carbon-sheets are wholly covered, eX-

cepting at the ends, and that the ends are protected by the projecting edges of the cover. The sheets D D may thus be safely shipped from place to place, and carried compactly,

, either in the pockets or hands of the owner,

Without being injured, and without soiling either the clothing or the hands. The flap'B also keeps the carbon-sheets from contact with the sheet A, and the latter is therefore always clean.

When the book is opened in the manner indicated in Fig. 2, the sheets D D maybe used in the usual manner, either with separate or detached sheets for receiving impressions, or with manifold and other sheets bound together alternately, or with bound sheets all alike, the sheets D D which are not to be used being turned back uponthe part B and covered by the part B. Y

Another Way of folding the book for use is represented in Fig. 3, the sheets not to be used being covered by the ilap, as already described, and the covered sheets, with the parts covering them, being folded back against the under side of the part A. The exposed/ carbon-sheet may easily be slipped over the leaf to receive an impression from the under side of the sheet, the sheetAat the same time passing underneath the same leaf. The stylus or manifold leaf may then be turned upon the exposed face of the carbon-sheet and impressed in the usual manner by the stylus. Detached sheets may also readily be slipped between the sheet A and the carbon-sheet, and the latter covered by the stylus-sheet.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

As a new varticle of manufacture, a book consisting of colored impression-sheets D D, the said sheets connected to the coVerA B B at the junction of the parts A and B, and the part B folded back toward the said junction, substantially as and for the purposes speci fied.

JAMES S. MCDONALD. Witnesses:

F. F. WARNER, D. J. MAGKELLAR.' 

